Efine perpendicular lines. a) lines in the same plane that intersect. b) lines in the same plane that never intersect. c) lines in the same plane that intersect to form a 90° angle. d) lines in the same plane that intersect to form a 180° angle.

Figure it out your self

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,